Acura TSX / Honda Accord CL. Manual — part 519

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P0123 is indicated, check for poor connections or loose terminals at the throttle body and
the throttle actuator control module, then go to step 1. If any other Temporary DTCs or DTCs are
indicated, go to the indicated DTC troubleshooting.

NO - Troubleshooting is complete.

DTC P0222: TP SENSOR B CIRCUIT LOW VOLTAGE

1. Turn the ignition switch ON (II).

2. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Are DTC P0122 and P0222 indicated at the same time?

YES - Check for poor connections or loose terminals at the throttle body, the throttle actuator control
module, and at the ECM/PCM, then go to step 17. If the connections are OK, go to step 9.

NO - Go to step 3.

3. Clear the DTC with the HDS.

4. Check TP SENSOR-B in the DATA LIST with the HDS.

Is there about 0.3 V or less when the throttle is fully opened?

YES - Got to step 5.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the
throttle body and the throttle actuator control module.

5. Turn the ignition switch OFF.

6. Disconnect the throttle body 6P connector.

7. Disconnect the throttle actuator control module 16P connector.

8. Check for continuity between throttle body 6P connector terminal No. 3 and body ground.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

Fig. 12: Checking For Continuity Between Throttle Body 6P Connector Terminal No. 3 And Body
Ground

Is there continuity?

YES - Repair short in the wire between the throttle body and the throttle actuator control module (TPS B
line), then go to step 17.

NO - Substitute a known-good throttle actuator control module (see THROTTLE ACTUATOR
CONTROL MODULE REPLACEMENT ), then go to step 17 and recheck. If DTC P0222 is not
indicated, replace the original throttle actuator control module, then go to step 17. If DTC P0222 is

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

indicated, go to step 15.

9. Measure voltage between throttle body 6P connector terminal No. 2 and body ground.

Fig. 13: Measuring Voltage Between Throttle Body 6P Connector Terminal No. 2 And Body
Ground

Is there about 5 V?

YES - Go to step 15.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

NO - Go to step 10.

10. Turn the ignition switch OFF.

11. Disconnect the throttle actuator control module 16P connector.

12. Disconnect the throttle body 6P connector.

13. Connect throttle body 6P connector terminal No. 2 to body ground with a jumper wire.

Fig. 14: Connecting Throttle Body 6P Connector Terminal No. 2 To Body Ground With A Jumper
Wire

14. Check for continuity between throttle actuator control module 16P connector terminal No. 11 and body

ground.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX